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n wwwoegg ob.com ? rfi lend MT 877472-0711 • Billings, W 800-735-4489 • Casper, WYSW235-0515 <br />Ae?rflr+GExea9senSkca fASi ' ,vw D66166b-7175 • Rapid City, SD 88B-872-1225 • College Station, TX 888-690-2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/25/11 <br />Project: Schwartz-GW 03/31/11 S25673 Collection Date: 03/31/11 12:50 <br />Lab ID: C11040039-001 DateReceived: 04/01/11 <br />Client Sample ID: MW-12 (S25673) Matrix: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 560 pCi/L E900.0 04/12/11 01:21 / ep <br />Gross Alpha precision (±) 10.9 pCi/L E900.0 04112111 01:21 / ep <br />Gross Alpha MDC 2.4 pCi/L E900.0 04/12/11 01:21 / ep <br />Gross Beta 130 pCi/L E900.0 04/12/11 01:21 / ep <br />Gross Beta precision (±) 3.1 pCi/L E900.0 04/12/11 01:21 / ep <br />Gross Beta MDC 2.5 pCi/L E900.0 04/12/11 01:21 / ep <br />DATA QUALITY <br />A/C Balance (± 5) -1.80 % Calculation 04/20/11 08:24 / kbh <br />Anions 6.09 meq/L Calculation 04/20/11 08:24 / kbh <br />Cations 5.88 meq/L Calculation 04/20/11 08:24 / kbh <br />Solids, Total Dissolved Calculated 367 mg/L Calculation 04/20/11 08:24 / kbh <br />TDS Balance (0.80 - 1.20) 0.960 Calculation 04/20/11 08:24 / kbh <br />FIELD PARAMETERS <br />Depth to Water 16.7 feet FIELD 03/31/11 12:50 <br />Field Conductivity 588 umhos/cm FIELD 03/31/11 12:50 <br />Flow 0.08 gpm FIELD 03/31/11 12:50 <br />pH 7.21 s.u. FIELD 03/31/11 12:50 <br />Temperature 7.2 °C FIELD 03/31/11 12:50 / *** <br />*** Performed by Sampler <br />Report RL - Analyte reporting limit. <br />Definitions: QCL - Quality control limit. <br />MDC - Minimum detectable concentration <br />MCL - Maximum contaminant level. <br />ND - Not detected at the reporting limit. <br />Page 4 of 19 <br />